x='abcdef'
print('c' in x)
print('cde' in x)
print('12' in x)
print('分隔符--------------------------------')
print('12' '34' '56')
print('12'+'34'+'56')
print('分隔符--------------------------------')
print('12'*3)
print('分隔符--------------------------------')
x='abc','def'
print(x)
print(type(x))